Active control of rotor noise

J. V. R. Prasad; L. N. Sankar; W. G. Park; J. Eric Corban

doi:10.1117/12.152764

8 September 1993 Active control of rotor noise

J. V. R. Prasad, L. N. Sankar, W. G. Park, J. Eric Corban

Proceedings Volume 1917, Smart Structures and Materials 1993: Smart Structures and Intelligent Systems; (1993) https://doi.org/10.1117/12.152764
Event: 1993 North American Conference on Smart Structures and Materials, 1993, Albuquerque, NM, United States

Abstract

This paper presents results from an exploratory research effort involving active control of rotor noise using blade airfoil shape changes. Using a numerical technique for solving the unsteady transonic full potential flow equation, the rotor blade flow problem is considered to study the effect of blade airfoil shape changes on the mach number distribution over the surface of the blade. In particular, the magnitude and location of maximum shape changes required to eliminate shock waves present on the blade (and hence the associated noise) are identified.

Citation Download Citation

J. V. R. Prasad, L. N. Sankar, W. G. Park, and J. Eric Corban "Active control of rotor noise", Proc. SPIE 1917, Smart Structures and Materials 1993: Smart Structures and Intelligent Systems, (8 September 1993); https://doi.org/10.1117/12.152764

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